THE TENDENCY TO USE RENEWABLE ENERGY SOURCES...A. GOES DOWN B. GOE...

12.

The tendency to use renewable energy sources...

A.

goes down

B.

goes up

C.

disappears

D.

levels

IV.

READING 2. Read the following passage and mark the letter A, B, C, or D to indicate the correctword for each of the blanks from 13 to 17. Deserts have come to symbolize for us places of extreme heat. The fact is most of the famous deserts(13)... the world are places where the thermometre goes bubbling away and where the sun beats downwithout mercy. But this does not mean that a desert must be a place where it is always (14)... If you findout the definition of a desert you will understand why this is so. A desert is a region where only special forms of life can exist because there is a (15)... of moisture. In a'hot' desert, there simply is not enough (16)... So the definition holds true. But suppose there is a regionwhere all water is frozen solid and cannot be used by plants. This satisfies the definition (17)... Only itwould make this a 'cold' desert.